1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
#include <arpa/inet.h>
#include <linux/if_packet.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/ether.h>
#include <unistd.h>
#include <errno.h>
#include "common_lib.h"
#include "LMS_SDR.h"
#include "LMS7002M.h"
#include "Si5351C.h"
#include "LMS_StreamBoard.h"
#include "LMS7002M_RegistersMap.h"
#include <cmath>
/** @addtogroup _LMSSDR_PHY_RF_INTERFACE_
* @{
*/
///define for parameter enumeration if prefix might be needed
#define LMS7param(id) id
LMScomms* usbport;
LMScomms* comport;
LMS7002M* lms7;
Si5351C* Si;
LMS_StreamBoard *lmsStream;
#define RXDCLENGTH 4096
#define NUMBUFF 40
int16_t cos_fsover8[8] = {2047, 1447, 0, -1448, -2047, -1448, 0, 1447};
int16_t cos_3fsover8[8] = {2047, -1448, 0, 1447, -2047, 1447, 0, -1448};
extern "C"
{
int write_output(const char *fname,const char *vname,void *data,int length,int dec,char format);
}
/*! \brief Called to send samples to the LMSSDR RF target
\param device pointer to the device structure specific to the RF hardware target
\param timestamp The timestamp at whicch the first sample MUST be sent
\param buff Buffer which holds the samples
\param nsamps number of samples to be sent
\param antenna_id index of the antenna
\param flags Ignored for the moment
\returns 0 on success
*/
int trx_lms_write(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int antenna_id, int flags) {
LMS_TRxWrite((int16_t*)buff[0], nsamps,0, timestamp);
return nsamps;
}
/*! \brief Receive samples from hardware.
* Read \ref nsamps samples from each channel to buffers. buff[0] is the array for
* the first channel. *ptimestamp is the time at which the first sample
* was received.
* \param device the hardware to use
* \param[out] ptimestamp the time at which the first sample was received.
* \param[out] buff An array of pointers to buffers for received samples. The buffers must be large enough to hold the number of samples \ref nsamps.
* \param nsamps Number of samples. One sample is 2 byte I + 2 byte Q => 4 byte.
* \param antenna_id Index of antenna port
* \returns number of samples read
*/
int trx_lms_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int antenna_id) {
uint64_t timestamp;
int16_t *dst_ptr = (int16_t*) buff[0];
int ret;
ret = LMS_TRxRead(dst_ptr, nsamps,0,×tamp, 10);
*ptimestamp=timestamp;
return ret;
}
/*! \brief set RX gain offset from calibration table
* \param openair0_cfg RF frontend parameters set by application
* \param chain_index RF chain ID
*/
void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index) {
int i=0;
// loop through calibration table to find best adjustment factor for RX frequency
double min_diff = 6e9,diff;
while (openair0_cfg->rx_gain_calib_table[i].freq>0) {
diff = fabs(openair0_cfg->rx_freq[chain_index] - openair0_cfg->rx_gain_calib_table[i].freq);
printf("cal %d: freq %f, offset %f, diff %f\n",
i,
openair0_cfg->rx_gain_calib_table[i].freq,
openair0_cfg->rx_gain_calib_table[i].offset,diff);
if (min_diff > diff) {
min_diff = diff;
openair0_cfg->rx_gain_offset[chain_index] = openair0_cfg->rx_gain_calib_table[i].offset;
}
i++;
}
}
/*! \brief Set Gains (TX/RX) on LMSSDR
* \param device the hardware to use
* \param openair0_cfg openair0 Config structure
* \returns 0 in success
*/
int trx_lms_set_gains(openair0_device* device, openair0_config_t *openair0_cfg) {
double gv = openair0_cfg[0].rx_gain[0] - openair0_cfg[0].rx_gain_offset[0];
if (gv > 31) {
printf("RX Gain 0 too high, reduce by %f dB\n",gv-31);
gv = 31;
}
if (gv < 0) {
printf("RX Gain 0 too low, increase by %f dB\n",-gv);
gv = 0;
}
printf("[LMS] Setting 7002M G_PGA_RBB to %d\n", (int16_t)gv);
lms7->Modify_SPI_Reg_bits(LMS7param(G_PGA_RBB),(int16_t)gv);
return(0);
}
/*! \brief Start LMSSDR
* \param device the hardware to use
* \returns 0 on success
*/
int trx_lms_start(openair0_device *device){
LMS_Init(0, 128*1024);
usbport = LMS_GetUSBPort();
//connect data stream port
LMS_UpdateDeviceList(usbport);
const char *name = LMS_GetDeviceName(usbport, 0);
printf("Connecting to device: %s\n",name);
if (LMS_DeviceOpen(usbport, 0)==0)
{
Si = new Si5351C();
lms7 = new LMS7002M(usbport);
liblms7_status opStatus;
printf("Configuring Si5351C\n");
Si->Initialize(usbport);
Si->SetPLL(0, 25000000, 0);
Si->SetPLL(1, 25000000, 0);
Si->SetClock(0, 27000000, true, false);
Si->SetClock(1, 27000000, true, false);
for (int i = 2; i < 8; ++i)
Si->SetClock(i, 27000000, false, false);
Si5351C::Status status = Si->ConfigureClocks();
if (status != Si5351C::SUCCESS)
{
printf("Failed to configure Si5351C");
exit(-1);
}
status = Si->UploadConfiguration();
if (status != Si5351C::SUCCESS)
printf("Failed to upload Si5351C configuration");
lms7->ResetChip();
opStatus = lms7->LoadConfig(device->openair0_cfg[0].configFilename);
if (opStatus != LIBLMS7_SUCCESS) {
printf("Failed to load configuration file %s\n",device->openair0_cfg[0].configFilename);
exit(-1);
}
opStatus = lms7->UploadAll();
if (opStatus != LIBLMS7_SUCCESS) {
printf("Failed to upload configuration file\n");
exit(-1);
}
// Set TX filter
printf("Tuning TX filter\n");
opStatus = lms7->TuneTxFilter(LMS7002M::TxFilter::TX_HIGHBAND,device->openair0_cfg[0].tx_bw/1e6);
if (opStatus != LIBLMS7_SUCCESS) {
printf("Warning: Could not tune TX filter to %f MHz\n",device->openair0_cfg[0].tx_bw/1e6);
}
printf("Tuning RX filter\n");
opStatus = lms7->TuneRxFilter(LMS7002M::RxFilter::RX_LPF_LOWBAND,device->openair0_cfg[0].rx_bw/1e6);
if (opStatus != LIBLMS7_SUCCESS) {
printf("Warning: Could not tune RX filter to %f MHz\n",device->openair0_cfg[0].rx_bw/1e6);
}
/* printf("Tuning TIA filter\n");
opStatus = lms7->TuneRxFilter(LMS7002M::RxFilter::RX_TIA,7.0);
if (opStatus != LIBLMS7_SUCCESS) {
printf("Warning: Could not tune RX TIA filter\n");
}*/
opStatus = lms7->SetInterfaceFrequency(lms7->GetFrequencyCGEN_MHz(),
lms7->Get_SPI_Reg_bits(HBI_OVR_TXTSP),
lms7->Get_SPI_Reg_bits(HBD_OVR_RXTSP));
if (opStatus != LIBLMS7_SUCCESS) {
printf("SetInterfaceFrequency failed: %f,%d,%d\n",
lms7->GetFrequencyCGEN_MHz(),
lms7->Get_SPI_Reg_bits(HBI_OVR_TXTSP),
lms7->Get_SPI_Reg_bits(HBD_OVR_RXTSP));
}
else {
printf("SetInterfaceFrequency as %f,%d,%d\n",
lms7->GetFrequencyCGEN_MHz(),
lms7->Get_SPI_Reg_bits(HBI_OVR_TXTSP),
lms7->Get_SPI_Reg_bits(HBD_OVR_RXTSP));
}
lmsStream = new LMS_StreamBoard(usbport);
LMS_StreamBoard::Status opStreamStatus;
// this will configure that sampling rate at output of FPGA
opStreamStatus = lmsStream->ConfigurePLL(usbport,
device->openair0_cfg[0].sample_rate,
device->openair0_cfg[0].sample_rate,90);
if (opStatus != LIBLMS7_SUCCESS){
printf("Sample rate programming failed\n");
exit(-1);
}
opStatus = lms7->SetFrequencySX(LMS7002M::Tx, device->openair0_cfg[0].tx_freq[0]/1e6,30.72);
if (opStatus != LIBLMS7_SUCCESS) {
printf("Cannot set TX frequency %f MHz\n",device->openair0_cfg[0].tx_freq[0]/1e6);
exit(-1);
}
else {
printf("Set TX frequency %f MHz\n",device->openair0_cfg[0].tx_freq[0]/1e6);
}
opStatus = lms7->SetFrequencySX(LMS7002M::Rx, device->openair0_cfg[0].rx_freq[0]/1e6,30.72);
if (opStatus != LIBLMS7_SUCCESS) {
printf("Cannot set RX frequency %f MHz\n",device->openair0_cfg[0].rx_freq[0]/1e6);
exit(-1);
}
else {
printf("Set RX frequency %f MHz\n",device->openair0_cfg[0].rx_freq[0]/1e6);
}
trx_lms_set_gains(device, device->openair0_cfg);
// Run calibration procedure
// calibrate_rf(device);
//lms7->CalibrateTx(5.0);
LMS_RxStart();
}
else
{
return(-1);
}
//connect control port
/* comport = LMS_GetCOMPort();
LMS_UpdateDeviceList(comport);
name = LMS_GetDeviceName(comport, 0);
if (*name == 0)
comport = usbport; //attempt to use data port
else
{
printf("Connecting to device: %s\n",name);
if (LMS_DeviceOpen(comport, 0)!=0)
return (-1);
}
lms7 = new LMS7002M(comport);
if( access( "./config.ini", F_OK ) != -1 ) //load config file
lms7->LoadConfig("./config.ini");
//calibration takes too long
//lms7->CalibrateRx(5.0);
//lms7->CalibrateTx(5.0);
*/
return 0;
}
/*! \brief Stop LMSSDR
* \param card Index of the RF card to use
* \returns 0 on success
*/
int trx_lms_stop(int card) {
/*
LMS_DeviceClose(usbport);
LMS_DeviceClose(comport);
delete lms7;
return LMS_Destroy();
*/
}
/*! \brief Set frequencies (TX/RX)
* \param device the hardware to use
* \param openair0_cfg openair0 Config structure (ignored. It is there to comply with RF common API)
* \param exmimo_dump_config (ignored)
* \returns 0 in success
*/
int trx_lms_set_freq(openair0_device* device, openair0_config_t *openair0_cfg,int exmimo_dump_config) {
//Control port must be connected
lms7->SetFrequencySX(LMS7002M::Tx,openair0_cfg->tx_freq[0]/1e6,30.72);
lms7->SetFrequencySX(LMS7002M::Rx,openair0_cfg->rx_freq[0]/1e6,30.72);
printf ("[LMS] rx frequency:%f;\n",openair0_cfg->rx_freq[0]/1e6);
set_rx_gain_offset(openair0_cfg,0);
return(0);
}
// 31 = 19 dB => 105 dB total gain @ 2.6 GHz
/*! \brief calibration table for LMSSDR */
rx_gain_calib_table_t calib_table_sodera[] = {
{3500000000.0,70.0},
{2660000000.0,80.0},
{2300000000.0,80.0},
{1880000000.0,74.0}, // on W PAD
{816000000.0,76.0}, // on W PAD
{-1,0}};
/*! \brief Get LMSSDR Statistics
* \param device the hardware to use
* \returns 0 in success
*/
int trx_lms_get_stats(openair0_device* device) {
return(0);
}
/*! \brief Reset LMSSDR Statistics
* \param device the hardware to use
* \returns 0 in success
*/
int trx_lms_reset_stats(openair0_device* device) {
return(0);
}
/*! \brief Terminate operation of the LMSSDR transceiver -- free all associated resources
* \param device the hardware to use
*/
void trx_lms_end(openair0_device *device) {
}
extern "C" {
/*! \brief Initialize Openair LMSSDR target. It returns 0 if OK
* \param device the hardware to use
* \param openair0_cfg RF frontend parameters set by application
*/
int device_init(openair0_device *device, openair0_config_t *openair0_cfg){
device->type=LMSSDR_DEV;
printf("LMSSDR: Initializing openair0_device for %s ...\n", ((device->host_type == BBU_HOST) ? "BBU": "RRH"));
switch ((int)openair0_cfg[0].sample_rate) {
case 30720000:
// from usrp_time_offset
openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 15;
openair0_cfg[0].tx_bw = 30.72e6;
openair0_cfg[0].rx_bw = 30.72e6;
openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
break;
case 15360000:
openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].tx_sample_advance = 45;
openair0_cfg[0].tx_bw = 28e6;
openair0_cfg[0].rx_bw = 10e6;
openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
break;
case 7680000:
openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].tx_sample_advance = 70;
openair0_cfg[0].tx_bw = 28e6;
openair0_cfg[0].rx_bw = 5.0e6;
openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
break;
case 1920000:
openair0_cfg[0].samples_per_packet = 256;
openair0_cfg[0].tx_sample_advance = 50;
openair0_cfg[0].tx_bw = 1.25e6;
openair0_cfg[0].rx_bw = 1.25e6;
openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
break;
default:
printf("Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);
exit(-1);
break;
}
openair0_cfg[0].rx_gain_calib_table = calib_table_sodera;
set_rx_gain_offset(openair0_cfg,0);
device->Mod_id = 1;
device->trx_start_func = trx_lms_start;
device->trx_write_func = trx_lms_write;
device->trx_read_func = trx_lms_read;
device->trx_get_stats_func = trx_lms_get_stats;
device->trx_reset_stats_func = trx_lms_reset_stats;
device->trx_end_func = trx_lms_end;
device->trx_stop_func = trx_lms_stop;
device->trx_set_freq_func = trx_lms_set_freq;
device->trx_set_gains_func = trx_lms_set_gains;
device->openair0_cfg = openair0_cfg;
return 0;
}
}
/*@}*/